Electronic Grading » Optical Sorting


Case Studies - What examples of use do you have for the Autosort?

CASE 1 / Fresh pack operation before packing

A 1300ML machine is usually a good match to the packing machines taking pre-sized potatoes and making a pack grade and waste immediately before check-grade and packaging. Often a holding bin is positioned between the check-grade position and the packer to balance the flows.

CASE 2 / Fresh pack pre-wash and pre-grade

A 2000ML machine has a high enough capacity to grade pre-sized potatoes and making a pack grade and waste before loading an array of storage bins to give a stock of product ready for packing. There is an operator but may not be a check-grade position after the machine. The bins hold pre-washed and pre-graded potatoes ready for packing. A check-grade facility is provided after the bins and before packaging to give a final check before packaging. This helps with the efficient packing of higher wastage samples

CASE 3 / Fresh pack pre-wash and added value

A 1300ML or 2000ML machine with 3 grades has a flexibility to sort potatoes and make a pack grade and waste while making a special grade for process or ready meal applications and filling storage bins with pack and special grade potatoes. The 3 dimensional sizing facilities have been used successfully to separate potatoes for making potato wedges and ready meals.

CASE 4 / Process pre grading

It is usually most efficient to remove to waste potatoes from a batch as early as possible in the process. Large percentages of waste in a batch may make it so inefficient that it is not economic to run through the process. The Autosort was developed for handling skin on potatoes and even in a peeling application can give a benefit. Green and rotten potatoes are best removed before entering the peeling plant and there are users with sorters proving a pre-grading service to process factories. In order to comply with the scheduled deliveries for the process plants use of vision machines reduces the requirement of labour at unsociable times.

CASE 5 / Waste recovery

Fresh pack rejects may be acceptable for use on process applications. In particular carrots for peeling, slicing and dicing must be fairly straight and uniform with no deep defects of defect closer that 20mm from the ends as carrots are trimmed to length. We have successfully extracted up to 40% process grade carrots from waste rejected according to the standards for fresh pack. Hand selection of process grade carrots from waste is a very labour intensive job, as the entire surface has to be inspected.

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